Solution sets of multivalued Sturm-Liouville problems in Banach spaces
We give some results about the topological structure of solution sets of multivalued Sturm-Liouville problems in Banach spaces.
Normalization of Poincaré singularities via variation of constants.
We present a geometric proof of the Poincaré-Dulac Normalization Theorem for analytic vector fields with singularities of Poincaré type. Our approach allows us to relate the size of the convergence domain of the linearizing transformation to the geometry of the complex foliation associated to the vector field.
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